WSU TRACTOR SAFETY. EH&SS 4/07/REDING. PRESENTATION WILL COVER. Tractor Operation Basics Common Tractor Hazards Accident Prevention Rollover Protection Structures (ROPS). TRACTORS: FRIEND & FOE.
Tractor Operation Basics
MOST ARE CAUSED DIRECTLY OR INDIRECTLY BY OPERATOR ERROR OFTEN INVOLVING CARELESSNESS, BAD JUDGEMENT OR UNNECESSARY HURRY
Training tractor drivers on each tractor
and its implements is essential
Heed tractor labels
Equipment operators MUST
Use tractor as intended
Training should include classroom and field lessons on:
Tractor rollovers happen when the center of gravity moves past a baseline of stability, either to the side or rear of the machine.
Many rollovers happen at speeds <8 mph and on slopes less than 5°. Avoid sudden motions.
Contributing factors to rollovers are:
Know the safe working load of each tractor & never exceed it!
Center of gravity affected by slopes, loads, turns & terrains
When the center of gravity is raised the risk of rollover increases
Common causes for rear-ward rollovers:
in as little as
¾ of a second
It is preferred to use another tractor to pull out a tractor from a ditch or muck. To avoid injury take care in using tire chains, boards, and other traction materials to improve tire traction
Common causes for sideways rollovers are tractor:
elevated too high on a hillside
or in a turn at excessive speed
This is the Protective Zone
*No ROPS-cause for the majority tractor-related fatalities (~130/yr)!
*Runovers are second (fatalities ~ 60/yr)!
PAST POINT OF NO RETURN
TWO HILLSIDE DEPRESSIONS
TRACTOR HITS DEPRESSION & TIPS
ROPS & SEATBELT PROTECT OPERATOR
ROPS AND SIDEWAYS ROLLOVERDEMO
With ROPS & a seatbelt, operator has an excellent chance of being contained in the protective zone and surviving a rear rollover.
Low profile tractors do not require ROPS
when used in:
THESE USES ARE THE ONLY EXCEPTIONS- LOW PROFILE TRACTORS ARE NOT TO BE USED FOR ANY OTHER PURPOSES
ROPS are required on this low-profile racing tractor!
Harper-Deweze All Terrain Mower
Use draw bar at height recommended in operator’s manual. Don’t alter or raise height of the drawbar. Raising the drawbar decreases safety & pulling effectiveness.
Install stay races where feasible to maintain a safe drawbar heightROLLOVER PREVENTION IMPROPER HITCHING
Loads that are attached by looping a chain around the axle housing, seat base, or upper link of the 3-point hitch reduce the pulling capacity and increase the possibility of rear-ward rollover
3-point hitch is desired
Always hitch to the drawbar
KEEP LOADS LOW!
Lifting loads too high can cause instability, rollover, and injury
Remember center of gravity changes as bucket rises
Injuries to wrist, arm, hip, leg, ankle & runovers can result
(WSU accident reports from several locations-ankles & feet)
Use a 3-point mount(either 2 hand and one foot or 2 feet and one hand in contact with steps at all times)
Face the tractor when going up and down the steps and use handholds. There is less chance of catching pant’s cuffs or boot loops on clutch pedal, etc. which can pitch a person off the tractor
Beware slippery, wet, and muddy surfaces
A person slipped on these muddy stairs and was run over and killed by this tractor
Usually happens due to:
Avoid runovers by:
To avoid caught-between incidents refer to run over prevention procedures
There is potential to crush a person on either side of the tractor in the area between the front and rear wheels
Stay out of this danger area as much as possible
PTO produces a rotating torque and directly transfers it to another machine or tool. For a mower implement the rotating torque is used to turn the mower blades
The most gruesome of injuries resulting in severe injury, dismemberment, or death by the human body becoming entangled in (literally wrapped around) equipment
A PTO operating at 1000 rpm will pull in clothing at a rate of 8’ per second.
PTO powered implements operating at 540 rpm can entangle a shirt sleeve or pant leg around the drive shaft 9 times in 1 second dragging your arm or leg with it
Happens in a blink of an eye!
PTO GUARDS HELP PREVENT INJURY
inspect shaft, driveline & universal joint to ensure guarding prior to use.
ensure it is not stuck to
This does happen
Click to see an actual recent incident report
Field work is tiring
tired people make mistakes:
Beware of carelessness, impatience and fatigue
Tie back long hair
Do not wear loose clothing or jewelry
Wear eye, hearing, & foot protection
together to avoid uneven braking in
panic stop situations
Depending on the situation, wear some or all of the following:
irritants, and burns from exhaust
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